AP432AQL-7

Overview

The AP432AQL-7 is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It features a reference voltage of 1.24V with ±0.5% tolerance and supports an output voltage range from 1.24V to 20V via external resistors. The device operates within a temperature range of -20°C to +85°C, offering a maximum cathode current of 200mA and a minimum regulation current of 150µA. It utilizes a SOT-25 package and exhibits a dynamic output impedance of 0.2Ω.

Feature Summary

• Adjustable output voltage programmable up to 20V using two external resistors
• High precision reference voltage with ±0.5% initial accuracy
• Low dynamic output impedance for stable performance
• Fast turn-on response characteristics

Applications

• Precision voltage monitoring circuits
• Over-voltage and under-voltage protection systems
• Constant-current sink applications
• Crowbar circuit implementations

Procurement Notes

Verify the component status as the datasheet indicates this series is not recommended for new designs. Confirm availability through authorized distributors as stock levels fluctuate. Ensure compliance with RoHS directives and check for specific packaging requirements such as tape and reel quantities before finalizing procurement orders.

Selection Notes

Select the AP432AQL-7 when high accuracy is required due to its ±0.5% tolerance compared to standard variants. The SOT-25 package suits space-constrained surface-mount designs. Consider the AZ431L as a potential alternative if newer design support is necessary, ensuring pin compatibility and electrical specifications match the application requirements.

Part Context

This component belongs to the AP432/AP432A family of adjustable precision shunt regulators produced by Diodes Incorporated. These devices serve as improved replacements for Zener diodes in various power management applications. The family offers multiple package options including SOT-23, SC-59, and SO-8, catering to diverse board layout needs.

Replacement Considerations

The datasheet explicitly recommends using the AZ431L as a replacement for new designs. Verify that the substitute maintains equivalent electrical characteristics and package dimensions to ensure seamless integration into existing hardware layouts without requiring schematic modifications.